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Servomex Gas Analysis Solutions. Extract up to 5% More Profit: Utilising Trace Nitrogen Analysis to Optimise ASU Argon Yield Dr Stephen Firth, Servomex. Servomex Gas Analysis Solutions. MultiExact. MultiExact. MultiExact. SERVOPRO FID. MultiExact / DeltaF 310. MultiExact.
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Servomex Gas Analysis Solutions Extract up to 5% More Profit: Utilising Trace Nitrogen Analysis to Optimise ASU Argon Yield Dr Stephen Firth, Servomex.
Servomex Gas Analysis Solutions MultiExact MultiExact MultiExact SERVOPRO FID MultiExact/ DeltaF310 MultiExact MultiExact MultiExact MultiExact MultiExact/ DeltaF310 MultiExact MultiExact MultiExact Chroma SERVOPRO FID % O2 % O2 % O2 Purity % O2 Purity Trace O2 Trace O2 TCD Trace HC Trace N2 Trace O2 Trace O2 Trace O2 Trace O2 Trace O2 Chroma k4000 Trace Trace Impurities Impurities Plasma k2001 Chroma/FID k4000 Trace N2 Trace N2 Trace HC Trace HC MultiExact MultiExact Trace CO2 Trace CO2 Chroma k4000 Trace Trace Trace Trace Impurities Impurities Moisture Moisture MultiExact MultiExact % O2 Purity % O2 Purity Plasma k2001 MultiExact MultiExact MultiExact MultiExact MultiExact MultiExact Trace N2 Trace N2 % O2 Purity % O2 Purity Trace N2O Trace N2O % O2 % O2 MultiExact MultiExact MultiExact MultiExact Trace Trace Trace CO2 Trace CO2 % O2 Purity % O2 Purity Moisture Moisture
Argon Extraction In Cryogenic ASU • Ar draw off point traditionally based on a percentage O2 measurement • Indirect measurement with limited resolution • Crude Ar yield compromised so that safe operation can be guaranteed. Argon Purifier
Description of Process • To optimize process for argon extraction, the draw-off O2/Ar from O2 LP column can be tuned to keep N2 < 2000ppm with measurement of N2 in Crude Ar • If column concentration profile too low, high N2 produced • - N2 can block condenser of crude Ar column eliminating reflux • - Causes a drop in Ar and O2 concentrations in LP column • - Production is lost and can take hours to restart process • If column concentration profile is too high, high O2 produced • - loss of Ar in waste N2 • - excess O2 enters crude Ar column
Solution • SERVOPRO Chroma (K4000) to measure N2 in Crude Ar with Plasma Emission Detector • SERVOPRO Chroma (K4000) with H-Cut Injection and O2 Trap permits interence free measurement of N2 in Ar with up to 90% O2 present • Provides tighter process control than O2 measurement allowing a higher concentration of Ar taken from LP column without compromising process or damaging Crude Ar Column
SERVOPRO Chroma Trace Gas Analyser • Gas Chromatograph (GC) technology • Configurable for the sub ppm analysis of N2 in Crude Ar • Multipoint analysis provides valuable continuous data from across the separation process • Each peak reported on screen with a process value (i.e. percentage, ppm or ppb).
SERVOPRO Chroma Trace Gas Analyser • Chroma configured for the sub ppm analysis of N2 in Crude Ar • Measurement unobtainable by Trace N2 in Ar analysers due to O2 interference…. • Or thermal conductivity detectors due to low level sensitivity requirement SERVOPRO Chroma Trace N2 MultiExact % O2
Typical LP Column Concentration Profile Servomex Gas Analysis Solutions for Cryogenic ASU Recovery can be worth hundreds of thousands of dollars a year Increase yield between 3-5%
Real Results: Cryogenic ASU with 1700 m3/H capacity Servomex Gas Analysis Solutions for Cryogenic ASU • Average output of argon product pre-Chroma: 1700m3/H • Control by Oxygen Analysis • N2in Ar side column feed measured by the Trace N2 Analyser at 500ppm N2 at draw-off point. • Average output of argon product post-Chroma: 1750m3/H • Argon yield increase circa. 3%.
Typical Payback & Return on Investment Plant Operation Variables Return on Investment & Payback Results
Summary: ASU Optimization for Argon Extraction • Challenge • Most plants run inefficiently in order to run safely as they do not have effective means to monitor N2 level in draw-off from O2 LP column • Solution • SERVOPRO Chroma (k4000) configured to measure trace N2 in Ar and O2 • 0-200ppm, 0-2000ppm • Argon recovery can be improved by up to 5% • Payback < 1 year
Servomex Innovation - Ambient Oxygen Gas Detection • Ambient monitoring in • ASU’s • Bottling Plants • Laboratories • Non-depleting and highly stable measurement technology • No sensor replacement • Noshelf life issues • longcalibration intervals. • No false alarms, Increased Safety • Servomex paramagnetic technology • paracube®microsensor never needs replacing • saving $400 a year / per Oxygen Point • Electrochemical sensor replacement costs per year • Reduced maintenance • No loss of reliability means no false alarms • potentially saving $10,000 or more a year • False alarm evacuations per year, lost time and production JUST LAUNCHED
Summary: ASU Optimization for Argon Extraction • Challenge • Most plants run inefficiently in order to run safely as they do not have effective means to monitor N2 level in draw-off from O2 LP column • Solution • SERVOPRO Chroma (k4000) configured to measure trace N2 in Ar and O2 • 0-200ppm, 0-2000ppm • Argon recovery can be improved by up to 5% • Payback < 1 year